<%@ page language="java" contentType="text/html; charset=UTF-8"
         pageEncoding="UTF-8" isELIgnored="false"%>
  
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<%@taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt"%>
<%@taglib prefix="fn" uri="http://java.sun.com/jsp/jstl/functions" %> 

<%-- <c:set var="a" value="chen-p" scope="page"></c:set>
<c:set var="a" value="chen-r" scope="request"></c:set>
<c:set var="a" value="chen-s" scope="session"></c:set>
<c:set var="a" value="chen-a" scope="application"></c:set>
<c:out value="${a}" default="Chen"> </c:out> --%>

<c:set var="chen" value="  22sad  " scope="application"/>

<c:out value="${chen} "></c:out>
<c:out value="${chen} "></c:out>
<c:out value="${fn:trim(chen) }"></c:out>




